Ultra-wideband radar motion sensor

ABSTRACT

An ultra-wideband (UWB) radar sensor, comprising: a pulse repetition interval generator; a fixed reference delay means connected to the pulse repetition interval generator; a transmit pulse generator connected to the reference delay means; a transmit antenna connected to the transmit pulse generator; an adjustable delay means connected to the pulse repetition interval generator; a receiver antenna; and a gating pulse generator connected to the adjustable delay means, said sensor being characterised by: an UWB radar receiver connected to the gating pulse generator and to the receiver antenna, said UWB radar receiver detecting reflected UWB radar pulses from a predetermined range and producing a baseband detection output signal indicative of a plurality of said detected pulses; and signal processing means for processing said baseband detection output signal, said signal processing means being connected to the UWB receiver and operating at baseband frequencies, said sensor being such as to sense motion. &lt;IMAGE&gt;



